On the breakup of an air bubble injected into a fully developed turbulent flow. Part 1. Breakup frequency

Martínez Bazán, Carlos; Montañés García, José Luis y Lasheras, Juan C. (1999). On the breakup of an air bubble injected into a fully developed turbulent flow. Part 1. Breakup frequency. "Journal Fluid Mechanics", v. 401 ; pp. 157-182. ISSN 0022-1120. https://doi.org/10.1017/S0022112099006680.

Descripción

Título: On the breakup of an air bubble injected into a fully developed turbulent flow. Part 1. Breakup frequency
Autor/es:
  • Martínez Bazán, Carlos
  • Montañés García, José Luis
  • Lasheras, Juan C.
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal Fluid Mechanics
Fecha: 1999
Volumen: 401
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Motopropulsión y Termofluidodinámica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The transient evolution of the bubble-size probability density functions resulting from the breakup of an air bubble injected into a fully developed turbulent water ow has been measured experimentally using phase Doppler particle sizing (PDPA) and image processing techniques. These measurements were used to determine the breakup frequency of the bubbles as a function of their size and of the critical diameter Dc defined as Dc = 1.26 ([sigma]/[rho])3/5[epsilon][minus sign]2/5, where [epsilon] is the rate of dissipation per unit mass and per unit time of the underlying turbulence. A phenomenological model is proposed showing the existence of two distinct bubble size regimes. For bubbles of sizes comparable to Dc, the breakup frequency is shown to increase as ([sigma]/[rho])[minus sign]2/5[epsilon][minus sign]3/5 [surd radical]D/Dc[minus sign]1, while for large bubbles whose sizes are greater than 1.63Dc, it decreases with the bubble size as [epsilon]1/3D[minus sign]2/3. The model is shown to be in good agreement with measurements performed over a wide range of bubble sizes and turbulence intensities

Más información

ID de Registro: 5928
Identificador DC: http://oa.upm.es/5928/
Identificador OAI: oai:oa.upm.es:5928
Identificador DOI: 10.1017/S0022112099006680
URL Oficial: http://journals.cambridge.org
Depositado por: Memoria de Investigacion 2
Depositado el: 08 Feb 2011 16:02
Ultima Modificación: 20 Abr 2016 14:36
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